Saint-Roch-de-Richelieu (French pronunciation: [sɛ̃ ʁɔk də ʁiʃ(ə)ljø], lit. 'Saint-Roch of Richelieu') is a municipality located in the Pierre-De Saurel Regional County Municipality of Quebec (Canada), in the administrative region of Montérégie. The population as of the Canada 2021 Census was 2,573.

Population trend:

Census	Population	Change (%)
2021	2,573	17.6%
2016	2,188	3.1%
2011	2,122	13.5%
2006	1,870	6.3%
2001	1,760	1.2%
1996	1,739	3.0%
1991	1,689	5.7%
1986	1,598	3.2%
1981	1,650	15.4%
1976	1,430	17.3%
1971	1,219	34.0%
1966	910	22.6%
1961	742	6.7%
1956	795	5.7%
1951	752	3.9%
1941	724	4.1%
1931	755	2.3%
1921	773	5.8%
1911	821	8.8%
1901	900	13.9%
1891	1,045	2.5%
1881	1,020	4.9%
1871	972	3.3%
1861	1,005	N/A

Mother tongue language (2021)

Language	Population	Pct (%)
French only	2,470	96.1%
English only	40	1.6%
Both English & French	25	1.0%
Other languages	35	1.4%

• List of municipalities in Quebec

• Municipal government Web site